I have a Small Form Factor IBM Think Centre M52 Type 8215-YCM desktop with a Pentium 4 HT 3.2GHZ CPU, 3GB of RAM, a 225 watt power supply, and 128MB of integrated video with an Intel 82945G chipset and I am not sure whether to upgrade to 256MB or 512MB. I found TWO low profile PCI 256MB cards & TWO low profile PCI 512MB cards online. I play video games from the internet and I want the video to be smoother and faster, but will %!@MB help or is that overkill?